Preparation And Properties Of WPC

The composite material of wood flour/thermoplastic has characteristics of high strength, cheap. But the compatibility of wood flour and thermoplastic was bad. This research dealt with wood flour/high density polyethylene composite, using the different effects of the kind and content of adhesive, size and content of wood flour were studied. HDPE-g-MA was used as adhesive. The effects of adhesive on mechanical and rheological properties of composite have been investigated using Instron Testing device, Falling Weight Impact tester, Thermogravimetric Analysis, Infrared and Scanning Microscope. Some conclusions can be drawn as follows:The mechanical property of composite material which contained adhesive was higher than the untreated sample. The better content of adhesive was 10%. From the Infrared and Scanning Microscope, the improvement of compatibility was discovered.Because of the bad compatibility of wood flour and polyethylene, the crack initiation time shortened. The crack initiation time determined the composite's toughness.The apparent viscosities of all sample decreased with the increase of shear rate. n<1,show obviously pseudoplastic behavior. It was shear-sensitivity material.The text made a research about the temperature distribution of the L-Die, and provided a mathematic method about its analysis.Wood flour; High Density Polyethylene;Adhesive; Composite Material; Compatibility...